..p., respectively, in mice and hamsters. Those results are in agreement with the limited distribution of melatonin-binding sites within the circadian clock of adult Syrian hamsters, as compared to other rodents...

Sleep and circadian disturbances in shift work: strategies for their management

O Van ReethCenter for the Study of Biological Rhythms, School of Medicine Free University of Brussels, BelgiumHorm Res 49:158-62. 1998

..Taken together, the present results indicate that sleep deprivation can reduce the light-induced phase-shifts of the mouse suprachiasmatic pacemaker, due to serotonergic and metabolic changes associated with the loss of sleep...